下载地址: http://sourceforge.net/projects/postgres-xc
1.安装依赖包
yum -y install zliblg-dev libreadine6-dev bison flex libperl-devel gcc perl-ExtUtils-Embed readline-devel zlib-devel python python-devel |
2.安装
./configure --prefix=/usr/local/pgxc --with-perl --with-python make make install |
3.环境变量：
export PATH=/usr/local/pgxc/bin:$PATH export LD_LIBRARY_PATH=/usr/local/pgxc/lib:LD_LIBRARY_PATH |
4. 配置 postgres-XC集群
主机名 | ip | 角色 | 端口 | nodename | 数据目录 |
gtm | 56.56.56.95 | Gtm | 6666 | one | /data/gtm |
gtm_standby | 56.56.56.96 | Gtm备库 | 6666 | two | /data/gtm_standby |
cd1 | 56.56.56.97 | Coordinator | 5432 | co1 | /data/coordinator |
Datanode | 5433 | dn1 | /data/pgdata | ||
Gtm Proxy | 6666 | gtmpoxy01 | /data/gtm_proxy | ||
cd2 | 56.56.56.98 | Coordinator | 5432 | co2 | /data/coordinator |
Datanode | 5433 | dn2 | /data/pgdata | ||
Gtm Proxy | 6666 | gtmpoxy02 | /data/gtm_proxy | ||
cd3 | 56.56.56.99 | Coordinator | 5432 | co3 | /data/coordinator |
Datanode | 5433 | dn3 | /data/pgdata | ||
Gtm Proxy | 6666 | gtmpoxy03 | /data/gtm_proxy |
5. 5安装 Postgres-XC，五台机器都要安装
6. 5台机器上都配置hosts
56.56.56.95 gtm 56.56.56.96 gtm_standby 56.56.56.97 cd1 56.56.56.98 cd2 56.56.56.99 cd3 |
7.95 和 96 GTM 机器 创建对应的数据目录
mkdir -p /data/gtm mkdir -p /data/gtm_standby |
97 、98 、99 机器创建对应的数据目录
mkdir -p /data/coordinator mkdir -p /data/pgdata mkdir -p /data/gtm_proxy |
8. 创建用户和配置环境变量(5台机器都要执行)
groupadd pgxc useradd pgxc -g pgxc passwd pgxc [root@gtm gtm]# chown -R pgxc:pgxc /data/gtm [root@gtm gtm]# chown -R pgxc:pgxc /usr/local/pgxc |
9.环境变量：
su - pgxc export PATH=/usr/local/pgxc/bin:$PATH export LD_LIBRARY_PATH=/usr/local/pgxc/lib:LD_LIBRARY_PATH |
10 . 初始化gtm
10.1 在56.56.56.95机器上初始化
su - gtm initgtm -Z gtm -D /data/gtm |
10.2 编辑/data/gtm/gtm.conf文件
nodename = 'one' #节点名称，可以指定为任意名称，不能与其他节点名重复 isten_addresses = '*'# GTM监听的ip地址，"*" 表示在所有的ip地址上监听 port = 6666 # GTM监控的端口 startup = ACT #主库设置为 ACT，如果是 Standby,则设置为 STANDBY |
11.初始化GTM的备库
96机器上初始化
su - pgxc initgtm -Z gtm -D /data/gtm_standby |
11.1 编辑 /data/gtm_standby/gtm.conf
nodename = 'two' # 节点名称 listen_addresses = '*' # active_host:指定连接GTM的IP地址 port = 6666 # active_port:指定连接GTM备库的端口 startup = STANDBY # startup: 因为是GTM的备库，所以要设置为STANDBY active_port = 6666 # GTM监控的端口 |
12. 初始化 gtm proxy
在56.56.56.97 98 99 三台机器上分别执行以下命令
chown -R pgxc:pgxc /data/gtm_proxy su - pgxc initgtm -Z gtm_proxy -D /data/gtm_proxy |
13.在97机器配置文件:/data/gtm_proxy/gtm_proxy.conf
nodename = 'gtmproxy01' port = 6666 gtm_host = 'gtm' gtm_port = 6666 |
在98机器配置文件：/data/gtm_proxy/gtm_proxy.conf
nodename = 'gtmproxy02' port = 6666 gtm_host = 'gtm' gtm_port = 6666 |
在99机器配置文件 /data/gtm_proxy/gtm_proxy.conf
nodename = 'gtmproxy03' port = 6666 gtm_host = 'gtm' gtm_port = 6666 |
19.初始化Coordinator 和数据节点
在 97 、 98、 99 三台机器上分别执行以下命令
initdb --nodename co1 -D /data/coordinator initdb --nodename dn1 -D /data/pgdata initdb --nodename co2 -D /data/coordinator initdb --nodename dn2 -D /data/pgdata initdb --nodename co3 -D /data/coordinator initdb --nodename dn3 -D /data/pgdata |
20.修改3台机器的 coordinator配置文件/data/coordinator/postgresql.conf
listen_addresses = '*' # what IP address(es) to listen on; port = 5432 # (change requires restart) log_connections = on gtm_host = 'gtm' # Host name or address of GTM gtm_port = 6666 # Port of GTM pgxc_node_name = 'co1~coN' # 根据实际的节点配置为co1、co2、... coN |
21.修改3台机器的datanode的配置文件/data/pgdata/postgresql.conf
listen_addresses = '*' # what IP address(es) to listen on; port = 5433 # (change requires restart) log_connections = on gtm_host = 'gtm' # Host name or address of GTM gtm_port = 6666 # Port of GTM pgxc_node_name = 'dn1~dnN' # 根据实际的节点配置为dn1、dn2、... dnN |
注意：datanode 和 Coordinator 的三个节点都要修改
pg_hba.conf
host all all 0.0.0.0/0 trust |
22.启动集群
启动集群的顺序：
GTM |
22.1.启动95机器gtm
gtm_ctl -Z gtm start -D /data/gtm |
22.2.启动96机器standby
gtm_ctl -Z gtm_standby start -D /data/gtm_standby |
注意：要先启动 gtm 再启动gtm_standby,否则gtm standby会因为无法连接到gtm而失败
22.3 用下面的命令查看gtm和standby启动状态
gtm_ctl -Z gtm status -D /data/gtm gtm_ctl -Z gtm_standby status -D /data/gtm_standby |
22.4.在 97 98 99 三台机器上启动proxy
gtm_ctl -Z gtm_proxy start -D /data/gtm_proxy |
22.5 .在 97 98 99 三台机器上启动 datanodes
pg_ctl start -D /data/pgdata -Z datanode |
22.6. ps -ef|grep pgxc 查看启动信息
22.7.在 97 98 99 三台机器上启动coordinator
pg_ctl start -D /data/coordinator -Z coordinator |
23. 注册集群节点信息，登录到 97 98 99 coordinator上执行
[[pgxl@cd1 coordinator]$ psql -p 5432 postgres 2018-03-14 16:04:49.826 CST [23830] LOG: connection received: host=[local] 2018-03-14 16:04:49.829 CST [23830] LOG: connection authorized: user=pgxl database=postgres psql (PGXL 10alpha2, based on PG 10beta3 (Postgres-XL 10alpha2)) Type "help" for help. |
create node co1 with(type='coordinator',host='cd1',port=5432); create node co2 with(type='coordinator',host='cd2',port=5432); create node co3 with(type='coordinator',host='cd3',port=5432); create node dn1 with(type='datanode',host='cd1',port=5433); create node dn2 with(type='datanode',host='cd2',port=5433); create node dn3 with(type='datanode',host='cd3',port=5433); |
postgres=# select * from pgxc_node; node_name | node_type | node_port | node_host | nodeis_primary | nodeis_preferred | node_id -----------+-----------+-----------+-----------+----------------+------------------+------------- co1 | C | 5432 | localhost | f | f | 1344656819 co2 | C | 5432 | cd2 | f | f | 474101254 co3 | C | 5432 | cd3 | f | f | -1046823559 dn1 | D | 5433 | cd1 | f | f | -560021589 dn2 | D | 5433 | cd2 | f | f | 352366662 dn3 | D | 5433 | cd3 | f | f | -700122826 |
不管是修改还是删除重建完成后你都需要重新加载文件 select pgxc_pool_reload()
postgres=# select pgxc_pool_reload(); #以上操作三个节点最好都要执行一下 pgxc_pool_reload ------------------ t (1 row) |
24. 测试：
24.1. coordinator1上验证
[pgxc@cd1 coordinator]$ psql -p 5432 postgres LOG: connection received: host=[local] LOG: connection authorized: user=pgxc database=postgres psql (PGXC 1.0.4, based on PG 9.1.13) Type "help" for help. postgres=# create table t (id int); LOG: connection received: host=56.56.56.97 port=41712 LOG: connection authorized: user=pgxc database=postgres CREATE TABLE postgres=# postgres=# insert into t select generate_series(1,100); INSERT 0 100 postgres=# select count(*) from t; count ------- 100 (1 row) |
24.2. coordinator2 上验证
[pgxc@cd2 coordinator]$ psql -p 5432 postgres LOG: connection received: host=[local] LOG: connection authorized: user=pgxc database=postgres psql (PGXC 1.0.4, based on PG 9.1.13) Type "help" for help. postgres=# select count(*) from t; LOG: connection received: host=56.56.56.98 port=34162 LOG: connection authorized: user=pgxc database=postgres count ------- 100 (1 row) |
24.3. coordinator23上验证
[pgxc@cd3 coordinator]$ psql -p 5432 postgres LOG: connection received: host=[local] LOG: connection authorized: user=pgxc database=postgres psql (PGXC 1.0.4, based on PG 9.1.13) Type "help" for help. postgres=# select count(*) from t; LOG: connection received: host=56.56.56.99 port=45888 LOG: connection authorized: user=pgxc database=postgres count ------- 100 (1 row) |
24.4.数据节点1验证
[pgxc@cd1 coordinator]$ psql -p 5433 postgres LOG: connection received: host=[local] LOG: connection authorized: user=pgxc database=postgres psql (PGXC 1.0.4, based on PG 9.1.13) Type "help" for help. postgres=# select count(*) from t; count ------- 37 (1 row) postgres=# select * from t; id ---- 7 14 15 20 21 22 24 25 27 30 ........ |
24.5数据节点2
[pgxc@cd2 coordinator]$ psql -p 5433 postgres LOG: connection received: host=[local] LOG: connection authorized: user=pgxc database=postgres psql (PGXC 1.0.4, based on PG 9.1.13) Type "help" for help. postgres=# select count(*) from t; count ------- 31 (1 row) postgres=# select * from t; id ----- 2 3 5 6 11 12 17 18 19 26 ...... |
24.6. 数据节点3
[pgxc@cd3 coordinator]$ psql -p 5433 postgres |
